Learn more physics!
What is the difference between a dead (old) tennis ball and a new one? And how does it affect your game?
- Cindy Almanzar (age 17)
Cape Coral High School, Cape Coral, FL US
The difference is that 'dead' tennis balls have gone
flat. This is because they start of pressurized, but after time, some
of the air leaks out of the inside of the ball and the ball looses
pressure. For some info on why this happens, check out Why do tennis balls loose their bounce?
Less pressure inside the ball means that the ball won't bounce as well. To find out why this happens, take a look at Why do basketballs bounce?
(It's the same for tennis balls as for basketballs.) Naturally, when
the ball doesn't bounce as well as you expect it to, your game probably
won't be as good.
(published on 10/22/2007)
Follow-up on this answer.